have your head screwed on (the right way)idiomPart ofheadhave your head screwed on (the right way)have your head screwed on (the right way) — idiomidiom1. To be a sensible person.1.idiomDefinitionTo be a sensible person.ExampleDon't worry about him; he has his head screwed on.She has her head screwed on the right way and won't make silly mistakes.